There are plenty of good models on Openrouter that are very cheap, maybe it's time to experiment with alternatives.
what are some of them?
Can't judge on the quality of the comparison but I'd start from https://arena.ai/leaderboard/code and maybe from OpenRouter's ranking.
Kimi K2
MiniMax M2.7, MiMo-V2-Pro, GLM-5, GLM5-turbo, Kimi K2.5, DeepSeek V3.2, Step 3.5 Flash (this last one is particularly cheap while still being powerful).